Metal-bending machine.



No. 732,260. PATENTBD JUNE 30, 1903. w. BLOCK.

METAL B ENDING MACHINE.

APPLICATION FILED in a. 1902. 1 I0 MODEL. 2 SHBETSr-SHEET 1.

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I PATENT rammed June so, 1903.

OFFICE.

WILLIAM BLOCK, OF NEW YORK, N. Y.

METAL-BENDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 732,260, dated June 30,1903.

Application filed May 5, 1902. Serial No. 106,042. (No model.)

To all whom it may concern: 7

Be it known that I, NVILLIAM BLOCK, a citizen of the UnitedStates,residin g at NewYork, in the county of New York and State ofNewYork, have invented a new and useful Metal- Bending Machine, of whichthe following is a specification.

The present invention relates to metalbending machines, and Whileparticularly intended for bending the blanks of linings for which can beadjusted so that bends may be made in angular relation to and atdiiferent distances from each other.

Still another object is 'to provide a powerdriven machine which ispartially automatic in operation, so that but one operator is necessary.in running the same audit is completely under his control.

The preferred construction of a machine embodyingthe invention is fullyillustrated in the accompanying drawings, and a description thereof iscontamed inthe following specification.

In the drawings, Figure -l is a'perspective View of such machine. Fig. 2is ahorizontal sectional view showing the lower portion of the machinein plan. Fig. 3 is a vertical sectional View showing a blank beingoperated upon.

Similarnumerals corresponding parts in all the figures of the drawings.

In the construction shown a suitable frame is provided comprisinghorizontal sills 10 and end beams 11, to which are connected uprightstandards 12, that support cross-bars 13. Upon these cross-bars aresecured bearings 14, in which is journaled a horizontal shaft 15. Thisshaft carries a pair of rotatable bending devices in the form of flangeddisks 16, that are located between the bearings 14 of referencedesignate and are spaced some distance apart with their flanges at theouter sides, as shown. The disks are secured to the shaft so as to bemovable therewith, being fastened thereon by means of set-screws 17,whereby they may be adjusted away from or toward each other.

Secured upon the sills 10 are tracks 18,upon which is slidably mounted abase-platform 19, carrying an upright hollow standard 20. In thisstandard is j ournaled a vertical shaft 21, the lower end of which isstepped in a bearing 22, the upper end. projecting above the standardand carrying a flat work-supporting platen 23. This platen conformsexactly to the shape of the bottom of the article or boxing to beoperated upon, and is therefore preferably rectangular,though it maybeof any other configuration desired. It is movable beneath the shaft 15and between the bendingrollers 16, the opposite edges of the platenconstituting bending-shoulders, which coact with said rollers, theflanges of the rollers overlapping the edges, while the inner portionsrest upon the same, as clearly shown in Fig. 1. It will be observed thatthis platen can be revolved so as to bring either of its opposite edgesinto coacting relation with the rollers, and in case the edges of oneset are farther apart than theedges of the other set the rollers can bemoved apart, so that they will coact therewith. In order to hold theplaten against its revoluble movement, a holding-screw 241- is threadedinto a boss 25, formed upon the lower portion of the standard 20, theinner end of said screw being arranged to engage in sockets 26,formed ina collar 27, that is attached to the lower end of the shaft 21, theouter end of said screw carrying a suitable handle 28. Other means maybe employed in lieu of the abovedescribed for holding the platenagainstits rotatable movement. p

The means for driving. the machine is as follows: A driving-shaft 29 islocated contiguous to the machine, said driving-shaft having mountedthereon a pair of spaced loose pulleys 30, between which is arranged atight pulley 31, and oppositely-running belts 32, driven by any suitablepower, run upon these loose pulleys, so as to rotate them in oppositedirections, said belts being movable onto the tight pulley, as will bereadily understood.

The drive-shaft 29 carries another tight pul- ICO lcy 33, about which ispassed a belt 34, that runs upon a pulley 35, keyed to a stub-shaft 36,arranged at one end to the machine-frame. This shaft carries at itsinner end a pinion 37, which meshes with a rack 38, fastened to thebase-platform 15). A belt 39 passes over pulleys 40 and 41, secured,respectively, to the stub-shaft 36 and the roller-earryin g shaft 15, sothat they will be rotated simultaneously. As a result it will be seenthat when one of the pulleys 32 is upon the tight pulley 31 thework-carrying platen will be moved in one direction beneath the shaft15, while the bending-rollers will rotatably coact with the edgesthereof. In like manner when the other belt is upon the tight pulley thesame coaction will take place, but in a different direction, and theplaten can therefore be moved back and forth. In order to operate thesebelts, suitable shifters are employed, said shifters comprisingshifting-arms L2, slidably mounted upon supports 43 and having fingers44, that engage 011 opposite sides of the belts. A separate andindependently-1novable arm is provided for each belt, and the inner endsof said arms have depending contact-shoulders 45. A1ongitudinally-movable actuating-bar 46 is arranged along one side ofthe base-platform 19 and is provided with outstanding abutments 47,arranged in the path of movement of the rack 38, as clearly shown inFig. 2. One end of this bar is slidably mounted in a suitableguide-boxin g 48, and to its upper face is secured an arm 49, that isdisposed diagonally to its line of movement, the shoulders of theshifting-arms 42 being arranged in the path of movement of the arm 19,on opposite sides of the same. A hand-lever 50 is pivoted upon asuitable portion of the frame and is pivotally connected to one of theshifting-arms 12, as shown.

In operation, assuming the belts 32 running upon their loose pulleys, ablank is placed upon the platen, which is arranged at one side of thebending-rollers. The operator then manually shifts one of the belts uponthe tight pulley by means of a hand-lever, whereupon thebending-rollerswill be rotated and at the same time the platen will be moved beneaththe same. As a result two sides of the blank will be bent at rightangles to the bottom. As the platen passes from beneath the shaft 15 andout of coacting relation with the bending-rollers the end of the rack 38will engage with the rear abutment 47. consequently moving theactuating-bar 4:6 in a rearwardly direction and shifting the belt fromthe tight pulley to the loose, thereby stopping the machine. Theoperator then releases the upright shaft 21 and revolves the platen tobring the other side edges into coacting relation with thebending-rollers, which rollers are moved toward or from each other uponthe shaft, so that they will be in proper relation. The operator then bypressing upon the other belt-shifter throws the oppositely-running beltupon the tight pulley, thereby returning the platen to the opposite sideofthe machine and beneath the shaft 15, consequently bending theopposite side walls of the blank. As the base 19 approaches the limit ofits return movement the rack will engage the other abutment 47, therebymoving the actuatingbar 46 in the opposite direction, and consequentlythrowing the belt from the tight to the loose pulley, as will be readilyunderstood. It will therefore be observed that an exceedingly simplepower-driven machine is provided which may be adjusted to operate upon avarious sizes and shapes of sheet-metal blanks and that it will make aplurality of bends simultaneously. Furthermore, the entire machine isunder the control of a single operator, who may start or stop it atpleasure, said machine, however, being automatically stopped when thelimit of its action is reached, thereby avoiding injury and unnecessarydelay in operation.

From the foregoing it is thought that the construction,operation,andmany advantages of the herein-described invention will be apparent tothose skilled in the art without further description, and it will beunderstood that various changes in the size, shape, proportion, andminor details of construction may be resorted to without departing fromthe spirit or sacrificing any of the ad vantages of theinvention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a machine of the class described, the combination with a rotatablebending device, of a base movable transversely to the axis of movementof the bending device, and a platen rotatably mounted upon the base andhaving a plurality of edges arranged, when the platen is rotated, to besuccessively brought into coaction with the bending device.

2. In a machine of the class described, the combination with a rotatablebending device, of a base movable transversely to the axis of movementof the bending device, a platen. ro-

tatably mounted upon the base and having a plurality of edges arranged,when the platen is rotated, to be successively brought into eoactionwith the bending device, and means for securing the platen againstrotary movement upon the base.

3. In a machine of the class described, the combination with a singlerotatable shaft carrying spaced bending-rollers, of a platen slidabletransversely of the shaft and between the rollers, the edges of theplaten coacting with the rollers, said platen being revoluble to presentits opposite edges to the rollers.

4. In a machine of the class described, the

combination with a single rotatable shaft, of

spaced bending-rollers mounted upon the single shaft and rotatabletherewith, and a worksupporting platen movable beneath the shaft, saidplaten having bending edges coacting with the rollers.

5. In a machine of the class described, the

combination with a single rotatable shaft, of spaced bending -rollersmounted upon the shaftand rotatable therewith, said rollers beingadjustable to different positions upon the shaft and movable toward andfrom each other, and a work-supporting platform movable transverselyofthe shaft, said platen having bending edges coacting with the rollersand arranged in overlapping relation therewith.

6. In amachine of the class described, the combination with a rotatablebending device, ofa work-supportin g platform movable transversely ofthe axis of rotation of the bending device and having a bending edgecoacting therewith, and driving means connected to both the bendingdevice and the platen for simultaneously rotating said bending deviceand moving said platen.

7. In a' machine of the class described, the combination with arotatable shaft carrying a bending-roller, of a revoluble platen movablewith relation to the bendingroller, said platen having a plurality ofangularly-disposed bending edges arranged to be successivel y broughtinto coacting relation with the roller upon the rotation of the platen,and means for holding the platen against rotation.

8. In a machine of the class described, the combination with a rotatableshaft carrying spaced bending-rollers, of a revoluble platen movablewith relation to the bending-rollers, said platen having sets ofangularly-disposed bending edgesarranged to be successively brought intocoacting relation with the rollers upon the rotation of the platen, andmeans for holding the platen against movement.

9. In a machine of the class described, the combination with a singlerotatable shaft carrying spaced bending-rollers, of a platen movablebeneath the shaft and between the rollers, the edges of the platencoacting with the rollers.

10. In a machine of the class described, the combination with a singlerotatable shaft carrying spaced bending-rollers that are movable towardand from each other, of a platen slidable transversely of the shaft andbetween the rollers, the edges of the platen coacting with the rollers,said platen being revoluble to present the different edges to therollers.

11. In a machine of the class described, the combination with arotatable shaft carrying spaced bending-rollers that are movable towardand from each other, of a platen movable beneath the shaft and betweenthe rollers, the edges of the platen coacting with the rollers, saidplaten being revoluble to present the different edges to the rollers,and driving means connecting both the shaft and platen forsimultaneously moving the platen and revolving the roller-carryingshaft.

12. In amachine of the class described, the combination with a movablework-support, of a rotatable bending-roller coacting with the support,reversible driving means for moving the work-support in oppositedirections, and

reversing mechanism connected with the driving means, and arranged to beengaged and actuated by the work-support to reverse the movement of saidsupport.

13. In a machine of the class described, the combinationwith a movablebase, of a standard secured to the base, a work-supporting platen{mounted upon the standard, and a shaft carrying a bending-roller thatcoacts with the edge of the platen, said base and standard being movabletransversely of the shaft.

14. In a machine of the class described, the

combination with a movable base, of a standard secured to the base, awork-supporting platen mounted upon the standard, and a shaft carrying abending-roller that coacts with the edge of the platen, said platenbeing movable transversely of the shaft and being revoluble to presentdifferent edges to the action of the bending-roller.

15. In a machine of the class described, the combination-with a movablebase, of a standard secured to the base, an upright shaft journaled uponthe standard, a platen secured to the upper end of the shaft, and abendingroller that coacts with the edges of the platen, said base andplaten being movable transversely of the shaft.

16. In a machine of the class described, the combination with a movablebase, of aworksupporting platen revolubly mounted upon and movable withthe base, a shaft carrying a bending-roller that coacts with the platen,said platen and base being movable transversely of the shaft, and meansfor holding the platen against its revoluble movement.

17 In a machine of the class described, the combination with a movablebase, of a standard secured to the base, an upright shaft j ournaledupon the standard, a platen secured to the upper end of the shaft andbeing thereby revoluble, a set-screw carried by the standard andengaging the shaft to hold said shaft against movement, and abending-roller coacting with the platen, said platen being movabletransversely of the axis of the roller.

18. In a machine of the class described, the combination with a slidingbase, of a worksupporting platen mounted upon and movable with the base,a shaft carrying a bendingroller that coacts with the edge of theplaten, said base being movable transversely of the shaft, and means forsimultaneously sliding the base and revolving the roller-carrying shaft.

19. In a machine of the class described, the combination with a movablework-supportin g platen, of a rotatable bending-roller coacting with theplaten, driving means for moving the platen, and mechanism connectedwith the driving means for automatically stopping the platen at apredetermined point.

20. In a machine of the class described, the combination with a movablework-support, of a rotatable bending-roller coacting with thework-support, driving means for moving the support, and mechanismconnected with the driving means for automatically stopping the supportat a predetermined point, said mechanism including a stop arranged to beengaged by the work-support.

21. In a machine of the class described, the

combination with a movable Work-support, of a bending device coactingwith the support during the movement thereof, means for driving thework-support, and mechanism actuated by the Work-support when in apredetermined position for disassociating the driving means from andstopping the Work-support.

22. In a machine of the class described, the combination with a movableWork-support, of a bending device coacting with the support during themovement thereof, means for driving the Work-support, said meansincluding a shaft, a tight pulley secured to the shaft, loose pulleyslocated on opposite sides of the tight pulley, oppositely-moving beltspassing about the loose pulleys and movable onto the tight pulley, anindependently-movable beltshifter coacting with each belt, and means forseparately moving the shifters.

23. In a machine of the class described, the combination with aWork-support, of a bending device coacting with the support during themovement thereof, means for driving the work-support, said meansincluding a shaft, a tight pulley secured to the shaft, loose pulleyslocated on opposite sides of the tight pulley, oppositely-moving beltspassing about the loose pulleys and movable onto the tight pulley, anindependently-movable belt-shifter coacting with each belt, alongitudinallymovable actuating-bar operated in opposite directions bythe opposite movements of the Work-support and alternately contactingwith the belt-shifters to move the belts from the tight to the loosepulleys, and manual means for moving the belts from the loose pulleys tothe tight pulley.

24. In a machine of the class described, the combination with a shaftcarrying a bendingroller, of a base slidably mounted beneath the shaft,a work-supportin g platen mounted upon the base and coacting with theroller, a rack secured to the base, a driving shaft carrying a pinionengaging with the rack, means for revolving the driving-shaft, andautomatic means engaged by the base for stopping said driving-shaft.

25. In a machine of the class described, the combination With a shaftcarrying a bendingroller, of a base slidably mounted beneath the shaft,a work-supporting platen mounted upon the base and coacting with theroller, a rack secured to the base, a drivingshaft carrying a pinionengaging with the rack, a belt connecting the roller-carrying shaft andthe driving-shaft, means for revolving the driving-shaft, and means forstopping the movement of said driving-shaft.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

\VILLIAM BLOCK.

Witnesses:

R. HERRMANN, 7 011110 GREENBERGER.

